[Midfacial and mandibular fractures during the growth period].

This study investigated the occurrence of primary and secondary complications following conservative versus surgical intervention in the treatment of midface and lower jaw fractures. Follow-up studies were undertaken on 81 patients who had been admitted to the above clinic with such fractures during their adolescence. It was found that more complications developed after surgical intervention.

Surgical aspects of sclerosing cholangitis. Results in 178 patients.

Of 178 patients with sclerosing cholangitis treated since 1950, 88 patients had associated inflammatory bowel disease, 72 had no such history, and 18 had iatrogenic injury or stone disease. A total of 233 biliary operations were performed, with a 75% rate of temporary improvement after initial operation. Subsequent operations resulted in a lower success rate and a higher mortality rate.

Gastrosplenic fistula: complication of adenocarcinoma of stomach.

Penetration of the spleen by an adenocarcinoma of the stomach is described in a patient undergoing chemotherapy. The diagnosis was made by computed tomography.

Manual compression device for fluoroscopy.

A device for manual compression and palpation during supine fluoroscopy has been designed. It enables effective use of the physiologic grasping and lever force potentials of the hand and wrist. The device permits optimal fluoroscopic palpation and compression techniques and prevents direct exposure to the lead-gloved hand.

Algorithm for the detection of fine clustered calcifications on film mammograms.

An algorithmic process for the detection and marking of clustered calcifications in digitized film-screen mammograms has been applied to mammograms from 50 clinical cases sampled at two digitization levels, in both the craniocaudal and mediolateral views. In all but one case the detector accurately located suggestive clusters found by radiologists in normal screening. In five cases additional clusters were also found by the detector.

Breast calcifications: analysis of imaging properties.

The imaging characteristics of microcalcifications in both benign and malignant breast conditions were analyzed in 48 digitized film mammograms. Each case included in this analysis had findings considered suggestive of malignancy by the radiologist, with the underlying histologic structure determined by excisional biopsy. Imaging properties of each microcalcification--such as pixel intensity, relative location, distribution, size, and local neighborhood intensities--were recorded.

Computed tomographic evaluation of spigelian hernia.

Spigelian hernia is an uncommon hernia of the anterior abdominal wall. Because of its insidious nature and at times nonspecific physical findings associated with it, the diagnosis of this hernia is often not made. Typically, the hernial orifice is small, and strangulation of the contents of the hernial sac can occur.

[Clinical imaging of the mimetic muscles using high resolution ultrasound].

In comparison to other techniques, high resolution ultrasound has proved to be a good method for clinical imaging of muscles. By free selection of the scan plane and multidimensional viewing it is possible to represent each muscle from origin to insertion and to observe them during function. Pathology produces different types of echogenity.

[Needle electromyography with sonographic control of needle position].

High resolution ultrasound provides excellent imaging of mimic muscles. In contrast to clinical examination, single muscles can be well defined and by real time imaging be observed during function. Since an EMG-needle electrode is also visible the puncture of small muscles or muscle-segments can be achieved with great exactness under sonographic control.

Computed tomographic findings of giant intestinal pseudopolyposis.

The cases of 3 patients with giant intestinal pseudopolyposis are presented. Giant pseudopolyposis complicated chronic ulcerative colitis in 2 patients and granulomatous colitis in 1 patient. Each patient was evaluated with either barium or Gastrografin enema as well as with computed tomography (CT) after administration of oral contrast material.

[The stability of hydrochlorothiazide and cyclopenthiazide in various dosage forms. 4. Stability of hydrochlorothiazide injection solutions II].

The hydrolytic decomposition of hydrochlorothiazide (1) in an optimized dispensing with polyethyleneglycol 400/ethanol as solvent led to an equilibrium in the isothermic short-term test as well as in the long-term stability test. Corresponding equilibrium concentrations were obtained for forward and back reaction. When comparing the precalculated equilibrium values with the long-term results the evaluation after Van't Hoff proved superior compared with an evaluation after the Arrhenius plot which is only applicable when the equilibrium concentrations are taken into consideration.

Computed tomography of xanthogranulomatous cholecystitis.

A case is presented of xanthogranulomatous cholecystitis that resembled carcinoma of the gallbladder on computed tomography. The large, infiltrating mass satisfied the criteria for massive carcinoma of the gallbladder.

[Polarographic determination of patulin].

The polarographic behaviour of the mycotoxin patulin is described with special reference to its analytical determination. The analysis of extracts is possible with the help of differential puls polarography and acetonitril as solvent. The analytical method needs a prepurification of the ethyl-acetate extracts like in the case of TLC analysis.

Digital subtraction angiography.

Digital subtraction angiography is a new imaging technique that uses a computer to subtract background distractions and to enhance contrast and density. The intravenous administration of contrast material permits safe outpatient screening for arterial disease. The exact role of intravenous digital subtraction angiography in cerebrovascular disease is still in evolution and remains the subject of debate.

[The stability of hydrochlorothiazide and cyclopenthiazide in various dosage forms. 3. Stability of hydrochlorothiazide injection solutions].

Studies of the stability of hydrochlorothiazide (1) in N-methylacetamide prove that a temperature dependent equilibrium is found in the isothermic short-term test as well as in the longterm stability test. Whereas the kinetic reaction evaluation after Arrhenius doesn't allow a forecast, the 25 degrees C-values, extrapolated after the Van't Hoff-equation, were confirmed using the long-term test. By adding the decomposition product aminodisulfamide (2) the hydrolysis is restricted.

Intraluminal mass of the left pulmonary artery.

Intravenous digital subtraction angiography demonstrated a polypoid carcinosarcoma invading the left main pulmonary artery, The angiographic criteria of inoperability of patients with central pulmonary tumors are discussed.

Outpatient metrizamide myelography: prospective evaluation of safety and cost effectiveness.

A group of 228 consecutive patients undergoing metrizamide myelography was prospectively evaluated for postprocedure symptoms. The observed prevalence of these symptoms concurs with previously reported inpatient studies, with the most common sequelae being exacerbation or onset of spine or extremity pain, headache, nausea, and paresthesia. Limitation of administered dose of metrizamide in lumbar myelography may slightly reduce the occurrence of common symptoms, but withdrawal of contrast medium at the completion of examination had no impact on their occurrence.

Radiology of the ileoanal reservoir.

The radiology of the ileoanal reservoir based on a study of 50 consecutive patients is presented. Small-bowel obstruction (12%) and leakage at the ileoanal anastomosis (8%) were detected most commonly. Partial outlet obstruction from reservoirs fashioned from three segments of terminal ileum was noted radiographically as a common problem unique to this form of ileoanal reservoir.

[The stability of hydrochlorothiazide and cyclopenthiazide in various drug forms. 2. The stability of Disalunil tablets].

Checking-up the stability of hydrochlorothiazid tablets (Disalunil), chemical and especially pharmaceutical-technological analyses were forming part of the adequate test programme. The pharmaceutical and chemical properties of the Disalunil tablets will be regarded as sufficient ones at normal conditions of their storage. In case the tablets will be stored, however, in their original packing under conditions of an increased humidity or with additional water, the water sorption will result in prolonged disintegration rates as well as in a reduced radial breaking strength and dissolution rate.

Digital subtraction angiography system evaluation with phantoms.

Advances in digital subtraction angiography imaging demonstrate the need for critical evaluation of the performance of digital subtraction equipment. The design of a phantom set for noninvasive assessment of the imaging quality of digital subtraction equipment is described; components include a remotely controlled transport system and individual patterns to evaluate the contrast and detail properties of the image intensifier, low-contrast sensitivity and resolution of the system, geometric distortion of image, linearity, mechanical and electronic stability of equipment, and effects of bone and bowel gas on iodine perception. The performance of an add-on digital radiographic system is presented, along with radiation exposure levels at the image intensifier for a range of radiographic techniques.

Esophagogastric polyps: radiographic and endoscopic findings.

Radiographic, endoscopic, and pathological findings were correlated in 20 patients with polypoid esophagogastric lesions. In 16 patients, pathological examination showed chronic inflammatory change and epithelial hyperplasia; the polyp was located on the gastric side of the squamocolumnar junction, usually in association with a prominent gastric fold, and probably represented a localized form of gastritis. In the other 4 patients, the lesion was adenocarcinoma.